Sea freight from China to major global destinations typically takes 25-35 days for the US West Coast, 35-45 days for the US East Coast, 30-40 days for Northern Europe, and 20-30 days for the Middle East. These are transit times only and don't include loading, unloading, or customs clearance. Always add 7-14 days to the transit time when quoting delivery dates to your customers. Buffer time is not waste — it's risk management.
Customs valuation is a common source of disputes. Chinese customs values goods for export based on the transaction value (the price actually paid). The importing country's customs may independently assess value. Common triggers for customs audits include: values significantly below similar goods, frequent changes in declared value, and incomplete documentation. Maintain consistent, well-documented valuation practices.
DDP (Delivered Duty Paid) shipping sounds convenient but carries significant risk. The seller controls the entire logistics chain, which means you have limited visibility and no recourse if things go wrong. Many DDP quotes include hidden margins on freight and customs brokerage. If you're importing regularly, invest in learning FOB or CIF and work with your own freight forwarder. The long-term savings typically justify the learning curve.